Roller-skate



(No Model.)

T. DAY.

ROLLER SKATE. No. 279,133. Patented June 12,1883.

Fig.6-

I UNITED STATES PATENT 'QFFICE.

THOMAS DAY, OF BOSTON, MASSACHUSETTS.

ROLLER-SKATE.

SIPEGIFICATION fiorming part of Letters Patent No. 279,138, dated June 12, 1883,

. Application filed April 12; 1883. (No model.)

To all whom it may concern:

Be it known that I, THOMAS DAY, a citizen of the United States, residing at Boston, in the county of Suffolk, and State of Massachusetts, have invented certain new and useful Improvements in Roller-Skates; and I do hereby deelare that the same are fully described in the following specification and illustrated in the accompanying drawings.

This invention relates to improvements in roller-skates, and it is carried out as follows, reference being had to th e accompanying drawings, where- Figure 1 represents a side elevation of the improved roller-skate. Fig. 2 represents a sectional end elevation of the skate, showing the foot-board in a level position. Fig. 3 represents a vertical section on the line A B, shown in Fig. 2. Fig. at represents a sectional end elevation of the skate, showing the foot board inclined to its extreme limit in relation to the axis of the rollers. Fig. 5 represents a sectional side elevation of one of the boxes, showing the rollers and hanger in the act of yielding upward toward the foot-board; and 6 represents a cross-section on the line G'D, shown in Fi 5.

Similar letters refer to similar parts wherever they occur on the different parts of the drawings.

In the drawings, (t represents the foot-board, as usual, which may be made of wood or metal, and provided with straps b and'c, or any other suitable means for fastening the skates to the feet of the wearer.

To the under side of the foot-board a are secured the heel and toe boxes at d by means of suitable screws or rivets passing through the flanges (1 cl of said boxes, or in any other well.- known or equivalent manner.

e is the hanger, having horizontal sleeve 0 ill its lower end, through which passes the spindle f, on which the rollers g g are journaled, as is usual on roller-sk tes; or the spindle and horizontal part c of the hanger may be made in one single piece without departing from the essence of my invention. The hanger c is jointed to the lower forked ends of the box (Z by means of the pin, screw, or rivet h to enable the hanger e'to rock on the said pin h as a fulcrum and to admit the hanger e to move slightly to and from the foot-board a. I make the hole 6 in it, through which the pin it passes, as a slotted perforation, as shown in Figs. 3 and 5, or, what is equivalent to it, slotted perforations through the lower forked ends of the box (I and a circular perforation through the hanger 6, although I prefer to make the hole e slotted, as shown in the drawings. Each hanger e is provided with side lips or exten in connection with internal projections, d d, on the inside of the box (I, serve two purposes-namely, to limit the rocking motion of the box at in relation to the hanger c, and thus serve as stops when the foot-board a is rocked to its farthest extent in either direction, and also to prevent the hanger from getting detached from its box by the accidental. breakage of the fulcrum-pin, screw, or rivet 71..

sions, e a, which,

In the upper end of each hanger c is made a.

central recess, 0, withside recesses, 07 c, 011 each side of it, as shown in Figs. 2, 4, and 6, which recesses are preferably made semicircular, as shown in said figures, but maybe made of any other suitable shape, as may be desirf able. The upper space in the box d, between the under side of the foot-board a. and the recessed upper part of the hanger, is adapted to receive the elastic rubber cushion 1', the upper side of which is madeto fit the under side of the foot-board 0, its ends made inclined to fit the inclined inner sides of the box d, as shown in Figs. 1, 3, and 5, and its under side provided with a central projection, 17, and side projections, i 13, on each side of it, as shown in Figs. 2 and 4, which projections are adapted to rest in the corresponding recesses, 6* e e, in the top of the hanger c, as shown. By the arrangement-of the project-ions on the under side of the rubber cushion '1. and corresponding recesses in the top of the hanger 0 several ad vantages are obtained, among which may be mentioned that the pressure on the foot-board is always adapted to bear on the central elas tic projection, 13, whether the foot-board is level or inclined to the right or left, and which serves, as it were, as an elastic fulcrum, on which the foot-board rocks as it is inclined by the varying pressure of the skater; and when the footboard is inclined to one side, as shown in Fi 4, it is supported on two of the yielding proj eetionsnamely, the central one, i an d that one of the side projections, i, which for the time being is nearest to the depressed side of the foot-board a, as shown in Fig. 4. Another advantage of this form of rubber cushion and recessed hanger is that the rubber is prevented from spreading out in either direct-ion and thus retains the life and elasticity of it a much longer time than is the case with ordinary roller-skate cushions now in use.

By the construction as above set forth the cushion is prevented from working out or dropping out from between the foot-board and hanger.

By the vertical 'yielding connection of the hanger in relation to the box, as described, the rollers and hanger are permitted to automatically yield toward the elastic cushion 1 when used on uneven ground or floor without in parting a jar to the skater.

Having thus fully described the nature, construction, and operation of my invention, I wish to secure by Letters Patent and c1ain1 1. In a roller-skate, the hanger e, with its side projections, e e, in combination with the stop projections d d on the box (1, as and for the purpose set forth.

2. In a roller-skate, the hanger c, with its central upper recess, efl and side recesses, e e, in combination with the elastic cushion i, having corresponding central projection, i, and side projections, 17 vi, as and for the purpose set forth. a

1 In testimony whereof I have affixed my naturein presence of two witnesses.

HOM D Y- \Vitnesses:

BA ANDREN, HENRY CHADJBOUBN. 

